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Week 7 Notes

# Week 7 Notes - November 13 Lecture 11 C3H8(g 5CO2(g 3CO2(g...

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November 13: Lecture 11 C3H8(g) + 5CO2 (g) ------- 3CO2(g) + 4H2O(g) (Exothermic) Hrxn = costs – gains Costs = 2(348) + 8(412) + 5(484) = 6412 kJ/mol Gain = 6(743) + 8(463) = 8162 kJ/mol Midterm : Next Tuesday on Chapters 2, 3 (up till hetero nuclear diatomic – 3.10) Found. M&L Bond Enthalpy – heats/energies needed to break a bond Valency - # valence e- needed to complete noble gas configuration

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Approximate Bond Length – Add the covalent radii of both elements in the bond # things e- geometry Bond Angle Hybrid unused 2 linear 180 sp(2) two p orbital 3 trigonal planer 120 sp 2 (3) one p 4 tetrahedral 109.5 sp 3 (4) 5 trigonal bipyramid 90, 120 sp 3 d(5) two d 6 octahedral 90 sp 3 d 2 (6) one d S spherical P Px, Py, Pz orthogonal D F (sigma) bond – single bond – skeletal bond overlap of hybrid orbitals cylindrically symmetrical Ex. Top view side view
bond – multiple bond overlap of unused p orbitals side on overlap – NO free rotation Double Bond +

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November 15: Lecture 12 Midterm: Chaps 2-3 Fund. L&M; 45 Questions, 1 Essay (Stoichiometry)

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